According to characteristics of reservoirs with special lithology in Damintun sag, potential reservoir damage factors, mechanism, types and degrees are analyzed through lab compatibility evaluation, X - diffraction, scanning electron microscope, and multi - purpose microscope .
In this paper,the potential formation damage factors of buried-hill reservoir is analyzed and the technical idea and countermeasures of drilling fluid are discussed,based on the analysis of basic characteristics of buried hill reservoirs of 3 oil(gas) fields offshore China.
The second is the analysis of fracture-pore type reservoir damage factors, the exploration of fracture-pore type reservoir damage mechanism, and the establishment of physical and mathematic models on the damage of DWF to fracture flow capacity and fracture-pore bound.
Specific and feasible reservoir protection measures are taken aiming at major damage factors in drilling and perforation job of Tuo 74 fault block in Shengtuo oilfield based on the reservoir sensitivity evaluation of the block.
According to laboratory real core analysis and damage experiment evaluation of sensibility, the geologic characteristics and the damage factors of Yinan structure on conglomerate gas reservoir are studied deeply.
A thin-walled cylinder made of No. 45 carbon steel is subject to torsional test as a confirmation test. It is deduced from the test that it does exist the anisotropic damage in the isotropic material and the experimental values of the damage factors D_1 and D_2 are found to be increase with the shearing stress τ and the twisting angle φ.
Applying basic damage mechanical theory, thermal damage analyseswere performed induced in fracture toughness and modulus, the practicalformula of damage factors varying with temperature and time was given.
Objective:To evaluate the change and the clinic significance of C reaction protein(CRP) in interventional therapy for coronary artery diseases, by assaying the CRP and the damage factors of cardiac muscle.
Lanchester Equation is an important mathematic model of decision-making on modern operation damages. Its naissance and develop provides reliable mathematic basis for decision-making on modern operation damages. Even in the information war, Lanchester Equation still can help to evaluate many damage factors and to make decision.
Using a computer code, fission damage factors were obtained as a function of diffusion reaction layer thickness and composition.
Damage factors in urban/wildland fire-Pebble Beach, California
Making use of the two damage factors and other key variables, the bond constitutive relationships between reinforcing bars and concrete under cyclic loads could be expressed by formulas.
The exact contribution of each of the damage factors was not revealed but it was demonstrated that direct and indirect effects contribute to the final yield losses.
In order to gain a clearer understanding of the decay mechanisms operating in limestones, and to determine the main damage factors at different exposure environments, calcite-dissolution models from the literature were compared.